20904960

素因数分解:

$2^{10}\times 3^1\times 5^1\times {\mathrm{1361}}^1$

素因数の和:1389

約数の個数: 88

約数和(自身を含む): 66912336

約数和(自身を除く): 46007376

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1024, 1280, 1361, 1536, 1920, 2560, 2722, 3072, 3840, 4083, 5120, 5444, 6805, 7680, 8166, 10888, 13610, 15360, 16332, 20415, 21776, 27220, 32664, 40830, 43552, 54440, 65328, 81660, 87104, 108880, 130656, 163320, 174208, 217760, 261312, 326640, 348416, 435520, 522624, 653280, 696832, 871040, 1045248, 1306560, 1393664, 1742080, 2090496, 2613120, 3484160, 4180992, 5226240, 6968320, 10452480, 20904960]

約数ペア:

[(1, 20904960), (2, 10452480), (3, 6968320), (4, 5226240), (5, 4180992), (6, 3484160), (8, 2613120), (10, 2090496), (12, 1742080), (15, 1393664), (16, 1306560), (20, 1045248), (24, 871040), (30, 696832), (32, 653280), (40, 522624), (48, 435520), (60, 348416), (64, 326640), (80, 261312), (96, 217760), (120, 174208), (128, 163320), (160, 130656), (192, 108880), (240, 87104), (256, 81660), (320, 65328), (384, 54440), (480, 43552), (512, 40830), (640, 32664), (768, 27220), (960, 21776), (1024, 20415), (1280, 16332), (1361, 15360), (1536, 13610), (1920, 10888), (2560, 8166), (2722, 7680), (3072, 6805), (3840, 5444), (4083, 5120)]